Spot the First Drop with Your Own Rain Detection System – Arduino Uno & LCD Kit

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

What if you could build a little weather‑watcher that keeps an eye on the skies for you? This kit turns an Arduino Uno, a sensitive rain probe, and a bright blue LED into a real‑time wet/dry indicator that displays its status on a crisp 16x2 LCD. It’s the perfect first project for curious minds who want to see code, circuits, and the physical world connect instantly.

What You'll Build

You’ll wire up a breadboard circuit around the Arduino Uno and the rain sensor module. The second moisture touches those tiny probe tracks, the LCD screen switches from “Dry” to “Wet” and the blue LED glows. This isn’t a simulation — it’s a working prototype that mimics the core logic inside automatic car wipers, smart irrigation controllers, and home‑weather stations. Once you see it react, you’ll already be thinking about adding a buzzer or connecting it to a relay.

What You'll Learn

• Read analog signals from a resistance‑based rain sensor and convert them into digital decisions
• Display live sensor values and custom status messages on a 16x2 LCD using the I2C backpack
• Control an LED output based on real‑world input, bridging hardware and software logic
• Build a complete breadboard circuit with resistors, jumper wires, and a portable 9V power supply

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This rain sensor starter kit fits right into CBSE Class 11‑12 computer science or physics projects, ATL Tinkering Lab challenges, and beginner B.Tech ECE workshops at colleges like VIT, SRM, or NITs. It’s also an ideal first STEM kit for curious 8‑year‑olds who want to build something that responds to the real world — parents can straighten the wires, and the child can own the logic. Smart India Hackathon participants will find it a handy sub‑system for weather‑aware automation proofs‑of‑concept.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.